Flowering Plants Visited by Colias philodice in Illinois

Colias philodice Godart: Pieridae, Lepidoptera(observations are from Robertson, Graenicher, Betz et al., Hilty, Fothergill & Vaughn; this butterfly is the Clouded Sulfur; because Robertson and Graenicher did not distinguish Colias philodice from Colias eurytheme, some of their observations undoubtedly apply to the latter species; the common name of this latter butterfly is the Orange Sulfur)